Since July 19, 2024, the Colorado Rockies have the worst ERA by a team, with an ERA of 5.26.

	TEAM	ERA	G	W%	W	L	SO	SHO	SV	IP	H	ER	R	HR	BB	HBP	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	H/9
1	Rockies	5.26	65	.415	27	38	467	0	17	569.2	624	333	357	100	217	31	0	2,507	18	7.38	3.43	2.15	1.58	18.6	8.7	1.48	.310	5.64	9.86
2	Marlins	4.91	66	.439	29	37	533	0	17	586.0	595	320	353	94	230	35	7	2,563	13	8.19	3.53	2.32	1.44	20.8	9.0	1.41	.300	5.42	9.14
3	Rangers	4.89	66	.485	32	34	567	0	19	584.0	593	317	333	89	198	37	11	2,546	23	8.74	3.05	2.86	1.37	22.3	7.8	1.35	.305	5.13	9.14
4	White Sox	4.82	64	.219	14	50	541	0	4	558.0	584	299	323	80	277	23	14	2,490	24	8.73	4.47	1.95	1.29	21.7	11.1	1.54	.321	5.21	9.42
5	Diamondbacks	4.70	65	.615	40	25	604	0	17	581.2	595	304	323	71	200	21	18	2,514	18	9.35	3.09	3.02	1.10	24.0	8.0	1.37	.324	5.00	9.21
6	Red Sox	4.63	66	.424	28	38	517	0	14	590.1	589	304	341	92	213	35	12	2,559	18	7.88	3.25	2.43	1.40	20.2	8.3	1.36	.292	5.20	8.98
7	Pirates	4.59	66	.424	28	38	533	0	18	578.1	561	295	328	73	225	40	9	2,511	16	8.29	3.50	2.37	1.14	21.2	9.0	1.36	.298	5.10	8.73
8	Nationals	4.53	65	.415	27	38	520	0	14	575.2	592	290	324	73	198	17	3	2,483	20	8.13	3.10	2.63	1.14	20.9	8.0	1.37	.310	5.07	9.26
9	Angels	4.52	66	.333	22	44	509	0	12	579.2	559	291	325	88	247	30	20	2,509	23	7.90	3.83	2.06	1.37	20.3	9.8	1.39	.288	5.05	8.68
10	Phillies	4.49	66	.500	33	33	556	1	11	580.2	602	290	304	89	187	22	2	2,501	14	8.62	2.90	2.97	1.38	22.2	7.5	1.36	.311	4.71	9.33
11	Reds	4.49	65	.462	30	35	553	0	15	571.1	531	285	300	92	183	39	8	2,429	15	8.71	2.88	3.02	1.45	22.8	7.5	1.25	.281	4.73	8.36
12	Twins	4.48	66	.424	28	38	627	0	14	591.0	575	294	316	78	189	27	7	2,531	23	9.55	2.88	3.32	1.19	24.8	7.5	1.29	.309	4.81	8.76
13	Orioles	4.30	66	.500	33	33	553	0	15	579.2	556	277	305	76	195	15	5	2,466	22	8.59	3.03	2.84	1.18	22.4	7.9	1.30	.295	4.74	8.63
14	Athletics	4.25	64	.500	32	32	526	0	17	574.1	541	271	291	66	200	33	8	2,443	30	8.24	3.13	2.63	1.03	21.5	8.2	1.29	.294	4.56	8.48
15	Blue Jays	4.12	65	.446	29	36	522	0	12	574.1	493	263	286	75	209	30	8	2,397	14	8.18	3.28	2.50	1.18	21.8	8.7	1.22	.268	4.48	7.73
16	Dodgers	4.11	65	.646	42	23	573	0	22	578.1	537	264	295	85	206	21	6	2,449	33	8.92	3.21	2.78	1.32	23.4	8.4	1.28	.289	4.59	8.36
17	Cardinals	4.07	66	.500	33	33	528	0	20	586.2	545	265	283	70	185	18	11	2,447	17	8.10	2.84	2.85	1.07	21.6	7.6	1.24	.289	4.34	8.36
18	Yankees	4.05	64	.563	36	28	603	0	18	580.1	538	261	286	74	213	26	7	2,466	19	9.35	3.30	2.83	1.15	24.5	8.6	1.29	.299	4.44	8.34
19	Cubs	3.77	64	.563	36	28	503	0	16	568.1	518	238	249	77	187	15	1	2,371	12	7.97	2.96	2.69	1.22	21.2	7.9	1.24	.278	3.94	8.20
20	Royals	3.69	65	.523	34	31	555	0	17	580.0	516	238	262	57	179	32	12	2,416	18	8.61	2.78	3.10	0.88	23.0	7.4	1.20	.288	4.07	8.01
21	Giants	3.63	65	.508	33	32	628	2	18	577.0	482	233	245	58	229	25	4	2,425	24	9.80	3.57	2.74	0.90	25.9	9.4	1.23	.286	3.82	7.52
22	Braves	3.61	67	.537	36	31	713	0	14	601.1	546	241	265	69	180	26	6	2,505	13	10.67	2.69	3.96	1.03	28.5	7.2	1.21	.314	3.97	8.17
23	Mets	3.56	67	.597	40	27	626	1	14	589.0	478	233	245	61	224	36	2	2,447	32	9.57	3.42	2.79	0.93	25.6	9.2	1.19	.278	3.74	7.30
24	Mariners	3.54	64	.516	33	31	597	0	8	567.0	476	223	247	82	135	21	4	2,309	15	9.48	2.14	4.42	1.30	25.9	5.8	1.08	.267	3.92	7.56
25	Guardians	3.45	66	.515	34	32	568	0	19	587.0	492	225	252	70	196	24	8	2,427	13	8.71	3.01	2.90	1.07	23.4	8.1	1.17	.269	3.86	7.54